function add(x)
    return function (y)
        x = x + 1
        return x + y, 1, 2
    end
end

function min(x, y)
    local m = x
    if y < x then
        m = y
    end
    return m
end

print(max(11, 9))
print(add(10)(15))
print(min(11, 9))